Longest intentional flight: Melbourne (AUS) to Edinburgh (UK): approximately 24 hours. (747 from Melbourne to Singapore, 60 minutes on the ground for refueling, then onwards to Paris; arrived Paris 22 hours after departure, then switch to short-haul, Paris-Edinburgh.)

Longest unintentional flight(s):

1) Edinburgh to San Diego via Dublin and New York -- arrived 38 hours late (two cancelled flights due to storms, a night crashing on a friendly editor's spare bed, and a mad dash across Dallas-Fort Worth to make a connection).

2) Tokyo to Edinburgh -- arrived home a week late, but never took off in the first place: return flight on long trip was cancelled in 2010 because Eyjafjallajökull erupted, grounding all flight to Europe. Eventually arrived on schedule after flight was rebooked for a week later.

Longest flight was NYC to Wellington, NZ, by way of I-forget-where-in-the-US and also Sydney Australia, where we changed planes, but I don't remember exactly how long it was. Fortunately, PNH had brought along episodes of Treme to watch, and there were books. And the food was actually pretty good on the plane.